Through Residue Of Nonring Molecule, E.g., Acetylene, Etc. Patents (Class 585/426)
  • Patent number: 7368624
    Abstract: A process for forming an aryl-aryl bond comprises the step of reacting an arene hydrocarbon compound with either (1) an organic oxidant selected from the group consisting of a quinone, a quinone imine, a quinone diimine, and a nitroarene, or (2) an oxidizing salt selected from the group consisting of a triarylaminium salt, an oxonium salt, and a nitrosium salt, or (3) a hypervalent iodine compound, each in the presence of a Brönsted or Lewis acid.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: May 6, 2008
    Assignee: Eastman Kodak Company
    Inventors: Christopher T. Brown, Deepak Shukla, Kevin P. Dockery, Jerome R. Lenhard, James R. Matz
  • Patent number: 6388153
    Abstract: The present invention relates to a method of making alpha-methylstyrene dimers by combining a cobalt catalyst, a free-radical initiator and an alpha-methylstyrene monomer, in an inert atmosphere, to form a mixture. The mixture is heated to a temperature in the range of 65° C. to 140° C. to form alpha methyl styrene dimers. The present invention also relates to the products produced by this inventive method.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: May 14, 2002
    Assignee: E. I. duPont Nemours and Company
    Inventor: Alexei Alexeyevich Gridnev
  • Patent number: 6316675
    Abstract: A process for the synthesis of olefins having aromatic substituents is described in which olefins are reacted with aryl halides in the presence of catalysts consisting of palladium compounds and tetraaryl phosphonium salts.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: November 13, 2001
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Manfred T. Reetz, Gunther Lohmer, Renate Lohmer
  • Patent number: 5939595
    Abstract: A process for preparing diarylethanes of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each hydrogen or C.sub.1 -C.sub.8 -alkyl, by reacting aromatic compounds of the general formula II ##STR2## where R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 have the abovementioned meanings, with styrenes of the general formula III ##STR3## where R.sup.1 has the abovementioned meanings, at from -20 to 300.degree. C. under from 1 to 100 bar in the presence of heterogeneous catalysts, wherein beta-zeolites or mordenites are used as heterogeneous catalysts.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: August 17, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Eugen Gehrer, Klemens Massonne, Hermann Gausepohl, Martin Fischer, Christopher William Rieker, Lorenz Siggel
  • Patent number: 5886202
    Abstract: Bridged fluorenyl/indenyl metallocenes having substituents at the 3 position of the indenyl and the use thereof in the polymerization of olefins are disclosed. Also a new method for preparing bridged fluorenyl/indenyl ligands wherein the indenyl has a substituent in the 3 position and the preparation of metallocenes with such ligands.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: March 23, 1999
    Inventors: Michael Jung, Helmut G. Alt, M. Bruce Welch
  • Patent number: 5866733
    Abstract: Diarylethanes of the formula I ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.8 -alkyl, are prepared by reacting benzene with a styrene of the formula III ##STR2## where R.sup.1 has the abovementioned meanings, by a process in which the reaction is carried out batchwise or continuously in the liquid or supercritical phase at from 150.degree. to 350.degree. C. and from 5 to 200 bar in the presence of a strongly acidic large-pore zeolite.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: February 2, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Eugen Gehrer, Klemens Massonne, Wolfgang Harder
  • Patent number: 5744666
    Abstract: A process for preparing an alkynyl fulvene group containing compound and said compound is provided. Said process comprises reacting an alkynyl ketone compound with a cyclopentadienyl-type compound.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: April 28, 1998
    Assignee: Phillips Petroleum Company
    Inventors: M. Bruce Welch, Bernd Peifer, Helmut G. Alt
  • Patent number: 5728908
    Abstract: A process for preparing a bridged ligand, where said bridged ligand has an alkynyl group, and said bridged ligand is provided. Said process comprises reacting an alkynyl fulvene containing compound with an alkali metal salt of a cyclopentadienyl-type compound.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: March 17, 1998
    Assignee: Phillips Petroleum Company
    Inventors: M. Bruce Welch, Bernd Peifer, Helmut G. Alt
  • Patent number: 5644018
    Abstract: Mesophase pitch that has a softening point of no more than 250.degree. C., a pyridine-insolubles content of no more than 50% and a n-heptane solubles content of 3-10%, with the n-heptane solubles experiencing a weight loss of no more than 15% at 450.degree. C. as measured by thermogravimetry is produced by polymerizing a condensed polycyclic aromatic hydrocarbon or a substance containing it in the presence of HF and BF.sub.3. This mesophase pitch is suppressed satisfactorily in its tendency to smoke during spinning and, additionally, it has a low enough softening point to exhibit outstanding spinnability. Hence, the pitch allows for high-volume spinning to be performed continuously for a prolonged time without causing extensive fouling of the surface of spinning nozzles.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: July 1, 1997
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takashi Kojima, Yasuhiro Hirai, Takafumi Yoshimura
  • Patent number: 5202514
    Abstract: Benzyltoluene/dibenzyltoluene oligomers essentially devoid of contaminating amounts of chlorine values, well adapted as dielectric liquids, are prepared by (a) condensing benzyl chloride with toluene or with lower benzyltoluene oligomers in the presence of a catalytically effective amount of ferric chloride, and then (b) directly dechlorinating the crude product of condensation, e.g., by contacting same with sodium methylate.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: April 13, 1993
    Assignee: Atochem
    Inventors: Raymond Commandeur, Daniel Missos
  • Patent number: 5186864
    Abstract: Dielectric liquids are prepared by (a) Friedel-Crafts condensing at least one aromatic halide with at least one aromatic compound in the presence of a catalytically effective amount of ferric chloride, and thereafter deliberately avoiding any downstream destruction/neutralization and/or washing of such ferric chloride catalyst, (b) optionally, removing unreacted reactants from the medium of reaction, and (c) recovering from such medium of reaction a purified dielectric liquid; the subject process is thus environmentally improved by avoiding the generation of aqueous solutions containing contaminating amounts of objectionable organic compounds.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: February 16, 1993
    Assignee: Atochem
    Inventors: Raymond Commandeur, Noelle Berger, Pierre Jay, Jacques Kervennal
  • Patent number: 5159082
    Abstract: A process for producing an aromatic compound is disclosed, which comprises coupling an aromatic sulfinic acid or a salt thereof with an aromatic halogen compound having at least one halogen atom attached to the carbon atom of the aromatic nucleus thereof or a vinyl group-containing halogen compound having at least one halogen atom attached to the carbon atom of said vinyl group in the presence of a catalyst compound containing an element selected from platinum metals.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: October 27, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keiichi Sato, Toru Okoshi
  • Patent number: 5068482
    Abstract: This invention relates to a method for producing 1,1-diarylethanes expressed by the following general formula (III): ##STR1## wherein R.sup.1 -R.sup.5 each stand for a hydrogen atom or an alkyl group having 1-3 carbon atoms. This method comprises the reaction of styrenes expressed by the following general formula (I) with an alkylbenzene expressed by the following general formula (II), and is characterized in that the catalyst used is an H-L type zeolite with a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of at least 4, or a zeolite modified by exchanging said H-L type zeolite with a bi- or tri-valent metal ion. ##STR2## wherein R.sup.1 -R.sup.5 have the same meanings as defined above.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: November 26, 1991
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Masahiro Akatsu, Hajime Takayama, Takeshi Matsuoka
  • Patent number: 5068481
    Abstract: The present invention relates to a method for producing diarylmethanes represented by the following formula (III) ##STR1## wherein R.sup.1 and R.sup.3 each stand for a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. This method comprises the reaction of a benzyl chloride represented by the following general formula (I) with benzene or an alkylbenzene represented by the following general formula (II): ##STR2## wherein R.sup.1 to R.sup.3 have the same meanings as defined above and is characterized in that the catalyst used is an HY or HL type zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of 4-10 and an alkali metal content of 5% by weight or less, calculated as an alkali metal oxide, or a zeolite obtained by the exchange of said HY or HL type zeolite with cations of a di- or tri-valent metal.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: November 26, 1991
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Masahiro Akatsu, Hajime Takayama, Takeshi Matsuoka
  • Patent number: 4990716
    Abstract: Diphenylmethanes such as o-benzyltoluene are prepared by contacting a benzyl halide with a benzene in the presence of a catalytic amount of a normally solid, insoluble perfluorosulfonic acid polymer under reaction conditions. The o-benzyltoluenes are useful intermediates in the production of anthraquinone and anthracene.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: February 5, 1991
    Assignee: The Dow Chemical Company
    Inventors: Gregory F. Schmidt, Paul D. Williams
  • Patent number: 4929785
    Abstract: A process is disclosed for producing diphenylalkanes, which process comprises the formation of a reaction mass comprising a (1) solvent, (2) iron, (3) copper, Cu(I) salt or a mixture thereof, and (4) phenylalkylhalide, and maintaining this reaction mass at a temperature of at least 40.degree. C. until diphenylalkane is formed.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: May 29, 1990
    Assignee: Ethyl Corporation
    Inventor: Saadat Hussain
  • Patent number: 4891126
    Abstract: Pitch that is obtained from a condensed polycyclic aromatic hydrocarbon and the content of an optically anisotropic phase in which is substantially 100% is disclosed. This mesophase pitch has a H/C atomic ratio of 0.5-1.0, contains naphthenic carbon in an amount of at least 7% of the total carbon, and has a softening point of 180.degree.-400.degree. C. Fibers melt-spun from this mesophase pitch can be converted to carbon or graphite fibers having high strength and modulus of elasticity by a heat treatment which consists of heating to a temperature of 250.degree.-300.degree. C. in an air atmosphere, then heating to 1,000.degree. C. or higher in an inert gas atmosphere. Such mesophase pitch is produced by polymerizing a condensed polycyclic aromatic hydrocarbon for 5-300 minutes at a temperature of 180.degree.-400.degree. C. and at a pressure of 5-100 atmospheres in the presence of 0.1-20 moles of HF and 0.05-1 mole of BF.sub.3 per mole of the condensed polycyclic aromatic hydrocarbon.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: January 2, 1990
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Isao Mochida, Yukio Sakai, Hiroyuki Otsuka
  • Patent number: 4855519
    Abstract: A method for producing arylethylene comprising four steps of: (I) bringing 1,1-diarylethane into contact with an acid catalyst in the presence of an inert gas to crack said compound into arylethylenes and alkylbenzenes; (II) separating the reaction mixture obtained in the above cracking step (I) into at least a fraction mainly containing 1,1-diarylethane; (III) bringing said fraction mainly containing 1,1-diarylethane into contact with hydrogen gas in the presence of a hydrogenation catalyst; and (IV) re-cracking hydrogenated fraction obtained in the preceding hydrogenation step (III) by bringing it into said cracking step (I).Particularly, this method is useful for producing p-isobutylstyrene which is a starting material for preparing a valuable medicine of ibuprofen.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: August 8, 1989
    Assignee: Nippon Petrochemicals Company
    Inventors: Isoo Shimizu, Hitoshi Mitsuyuki, Kazumichi Uchida, Yuuichi Tokumoto
  • Patent number: 4855518
    Abstract: A method for producing p-alkylstyrene which is characterized in that side reaction scarcely occurs, catalyst and unreacted material are easily recovered for the reuse, the p-position selectivity is excellent and yield of aimed product is high. In the method, monoalkylbenzene having an alkyl group with 3 or more carbon atoms is reacted with acetaldehyde in the presence of hydrogen fluoride catalyst under the conditions of a temperature of 0.degree. C. or lower, a molar ratio of 2 to 100 in "alkylbenzene/acetaldehyde", the other molar ratio of 1.7 to 300 in "hydrogen fluoride/acetaldehyde", the proportion of hydrogen fluoride to the sum of hydrogen fluoride and water in the reaction system of 65% by weight or higher, and the concentration of acetaldehyde in the reaction system of 1.0% by weight or lower to obtain 1,1-bis(p-alkylphenyl)ethane, and then subjecting it to catalytic cracking at a temperature in the range of 200.degree. to 650.degree. C. in the presence of an acid catalyst.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: August 8, 1989
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Isoo Shimizu, Yuuichi Tokumoto
  • Patent number: 4827065
    Abstract: A method for producing p-isobutylstyrene which is characterized in that starting materials are inexpensive, processes are easy to be done and products are highly pure. The method comprises the step of catalytically cracking 1,1-bis(p-isobutylphenyl)ethane at temperatures in the range of 200.degree. to 650.degree. C. in the presence of a protonic acid catalyst and/or a solid acid catalyst to produce p-isobutylstyrene and isobutylbenzene, and at least a portion of said isobutylbenzene is recycled to produce said 1,1-bis(p-isobutylphenyl)ethane by reaction with acetaldehyde in the presence of sulfuric acid.
    Type: Grant
    Filed: July 10, 1985
    Date of Patent: May 2, 1989
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Isoo Shimizu, Ryotaro Hirano, Yasuo Matsumura, Hideki Nomura, Kazumichi Uchida, Atsushi Sato
  • Patent number: 4814537
    Abstract: A (methyl-substituted)diphenyl methane such as methyldiphenylmethane is prepared by a coupling reaction wherein a methyl-substituted benzene such as toluene is contacted with a solid heterogeneous catalyst having labile oxygen such as an oxide of vanadium, rhenium or molybdenum. By-product formation, especially the formation of carbon dioxide, is significantly reduced by the practice of this process.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: March 21, 1989
    Assignee: The Dow Chemical Company
    Inventor: Stanley S. T. King
  • Patent number: 4801372
    Abstract: A novel optically anisotropic pitch is provided which is produced by thermal modification of a polymer having a structure of an alkylbenzene and a condensed aromatic compound with two to four fused rings bonded to each other via a methylene group.In preferred embodiments, the optical anisotropy is 80% or more. As the alkylbenzene there may be used xylene, trimethylbenzene or tetramethylbenzene. As the condensed aromatic compound with two to four fused rings, there may be used naphthalene, anthracene, phenanthrene, or naphthacene. The polymer starting material may be obtained by the reaction of a xylene formalin resin, mesitylene formalin resin or alkylbenzene and a condensed aromatic compound with two to four fused rings in the presence of a protonic acid as a catalyst.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: January 31, 1989
    Assignee: Mitsubishi Oil Co., Ltd.
    Inventors: Kazuhito Tate, Hajime Yoshida, Teruhiko Sasaki
  • Patent number: 4727208
    Abstract: The invention, in one aspect, is a process for preparing a (methyl-substituted)diphenyl methane by coupling at least (including benzene) a methyl-substituted benzene into the (methyl-substituted)diphenyl methane comprising contacting at least the methyl-substituted benzene with a solid heterogeneous reactant-catalyst having labile oxygen under conditions whereby the (methyl-substituted)diphenyl methane is prepared. For example, using molybdenum trioxide or vanadium pentoxide, toluene can be coupled in the vapor or liquid phase to prepare (2-methylphenyl)phenylmethane. By-product formation, especially formation of carbon dioxide, can be very low.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: February 23, 1988
    Assignee: The Dow Chemical Company
    Inventor: Stanley S. T. King
  • Patent number: 4689436
    Abstract: Alkenyl-aromatic hydrocarbon derivatives are prepared by reaction of an aromatic hydrocarbon with an alkenyl-aromatic hydrocarbon in the presence of a heteropoly acid and/or a salt thereof.
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: August 25, 1987
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Tomiyasu Minokami, Yoshinori Saito, Toshiyuki Tsubouchi
  • Patent number: 4675462
    Abstract: A process for the preparation of (2,2)-paracyclophane by conversion of p.methylbenzyltrimethylammonium halide to the corresponding hydroxide and by Hofmann elimination from p.methylbenzyltrimethylammonium hydroxide, wherein both reactions are carried out in the same aqueous solution of an alkaline hydroxide and in the presence of a copper or iron compound.
    Type: Grant
    Filed: October 29, 1986
    Date of Patent: June 23, 1987
    Assignee: Montedison S.p.A.
    Inventors: Raffaele Ungarelli, Maurizio A. Beretta, Loris Sogli
  • Patent number: 4670129
    Abstract: A pitch having optical anisotropy for use in production of carbon fibers, wherein the pitch is prepared using a compound represented by the formula (I) as a raw starting material and subjecting the compound to thermal modification and then removing light fractions ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each represents a hydrogen atom or a methyl group or an ethyl group; R.sub.5 represents a hydrogen atom or a methyl group; the total number of carbon atoms of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is from 2 to 4 and the total number of carbon atoms of R.sub.6, R.sub.7, R.sub.8 and R.sub.9 is from 2 to 4; and m is at least 3. The pitch is substantially homogeneous in quality, has a low softening point and has excellent molecular orientation.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: June 2, 1987
    Assignee: Mitsubishi Oil Co., Ltd.
    Inventors: Kazuhito Tate, Hajime Yoshida, Kazuhiro Yanagida
  • Patent number: 4429174
    Abstract: A process for dehydrocoupling a hydrocarbon, such as toluene, using oxygen as the oxidant, in the presence of a crystalline zeolite of the faujasite structure containing a cation such as cesium, and a promoter, such as boron and/or phosphorus is disclosed.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: January 31, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Harry H. Teng, I-Der Huang
  • Patent number: 4400567
    Abstract: Highly selective oxidative coupling of aromatic methyl groups, such as coupling toluene to DPE, is effected under mild, liquid phase conditions with a peroxodisulfate without expensive metal ion catalysts, in presence of substantial amounts, preferably equimolar, of methyl, ethyl or benzyl substituted quaternary ammonium salts. A continuous process is possible by electrolytic regeneration of the spent oxidant.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: August 23, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Theodorus M. Wortel, Jan H. Schutten
  • Patent number: 4393261
    Abstract: This invention relates to novel hydrocarbon resins and processes for their preparation. More particularly, the invention relates to a liquid hydrocarbon resin prepared by polymerizing norbornene and xylene with a Friedel-Crafts catalyst. The polymerized resin is hydrogenated to provide water white liquid hydrocarbon resins useful as liquid tackifiers in preparing hot-melt adhesive formulations.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: July 12, 1983
    Assignee: Eastman Kodak Company
    Inventor: Robert P. Allen
  • Patent number: 4359327
    Abstract: Gas adsorbents comprise at least one paracyclophane (or PCP) derivative, constituted by cyclic oligomers formed of mer-units which are interlinked so as to define a rigid structure with a substantially cylindrical intramolecular cavity. The dimensions of the cross-section of said cavity correspond substantially to those of the one or more types of gas molecules that it is desired to introduce therein.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: November 16, 1982
    Assignee: Agence Nationale de Valorisation de la Recherche
    Inventors: Michel B. Armand, Francis J. P. Jeanne
  • Patent number: 4339621
    Abstract: A process for the preparation of diphenylmethanes and especially of unsubstituted and alkyl substituted diphenylmethanes such as diphenylmethane (DPM) itself and 2-benzyl toluene (OBT) which is an intermediate in the preparation of anthraquinone.The process involves the reaction of a benzene with an .alpha.-chloromethyl benzene in the presence of sulphuric acid and a cationic surfactant, such as a long chain quaternary ammonium salt, or a non-ionic surfactant susceptible to protonation under strong acid conditions, such as an alkoxylated alkyl phenol.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: July 13, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: John O. Morley
  • Patent number: 4330439
    Abstract: The electric device according to the present invention has as its constituents the insulating materials and elements comprising films of synthetic resin, for instance, polypropylene, impregnated with 1-phenyl-2-ethylphenylethane and/or 1-phenyl-2-isopropylphenylethane.According to the present invention, insulating oils having favorable compatibility with the film of synthetic resin such as polypropylene and favorable affinity to metals and having low viscosity have been provided, and in addition, electric devices excellent in properties of withstanding a high voltage and dielectric properties in a broad range of temperature from a low temperature to a high temperature have also been offered.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: May 18, 1982
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Nissin Electric Co., Ltd.
    Inventors: Mineaki Nishimatsu, Sadayoshi Mukai, Yoshinori Hayashi, Osamu Yamaguchi, Akira Ito, Nobuo Ahiko
  • Patent number: 4278826
    Abstract: Toluene dehydrocoupled products are produced by heating toluene in the vapor phase with an inorganic metal/oxygen composition which functions as an oxygen carrier and has the empirical formula:M.sub.a.sup.1 M.sub.b.sup.2 M.sub.c.sup.3 O.sub.xwhere M.sup.1 is lead, M.sup.2 is antimony, and M.sup.3 is at least one element selected from silver, zinc, gallium, arsenic, the lanthanides or rare earths, Groups 1a, 2a, 3b, 4b, and 8 of the Periodic Table of the Elements, and mixtures thereof, and wherein a is 1, b is 0.01 to 10, c is 0.01 to 10, and x is a number taken to satisfy the average valences of M.sup.1, M.sup.2, and M.sup.3 in the oxidation states in which they exist in the composition. Alternatively, the same inorganic metal/oxygen composition can be employed as a catalyst or as a combination catalyst/oxygen carrier for the dehydrocoupling reaction when oxygen or an oxygen-containing gas is heated with the toluene.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: July 14, 1981
    Assignee: Monsanto Company
    Inventors: Samuel J. Tremont, Alex N. Williamson, Arthur J. Solodar
  • Patent number: 4278824
    Abstract: Toluene dehydrocoupled products are produced by heating toluene in the vapor phase with an inorganic metal/oxygen composition which functions as an oxygen carrier and has the empirical formula:M.sub.a.sup.1 M.sub.b.sup.2 M.sub.c.sup.3 O.sub.xwhere M.sup.1 is lead, M.sup.2 is bismuth, and M.sup.3 is at least one element selected from silver, zinc, indium, germanium, phosphorus, arsenic, thorium, the lanthanides or rare earths, Groups 1a, 2a, 3b, 4b, and 8 of the Periodic Table of the Elements, and mixtures thereof, and wherein a is 1, b is 0.01 to 10, c is 0.01 to 10, and x is a number taken to satisfy the average valences of M.sup.1, M.sup.2, and M.sup.3 in the oxidation states in which they exist in the composition. Alternatively, the same inorganic metal/oxygen composition can be employed as a catalyst or as a combination catalyst/oxygen carrier for the dehydrocoupling reaction when oxygen or an oxygen-containing gas is heated with the toluene.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: July 14, 1981
    Assignee: Monsanto Company
    Inventors: Samuel J. Tremont, Alex N. Williamson, Arthur J. Solodar
  • Patent number: 4268704
    Abstract: Toluene dehydrocoupled products are produced by heating toluene in the vapor phase with an inorganic metal/oxygen composition which functions as an oxygen carrier and has the empirical formula:M.sub.a.sup.1 M.sub.b.sup.2 M.sub.c.sup.3 O.sub.xwhere M.sup.1 is lead, M.sup.2 is at least one element selected from thallium and Group 2a of the Periodic Table of the Elements, and mixtures thereof, and M.sup.3 is at least one element selected from silver, zinc, phosphorus, arsenic, thorium, the lanthanides or rare earths, Groups 1a, 3b, 4b, and 8 of the Periodic Table of the Elements, and mixtures thereof, and wherein a is 1, b is 0.01 to 10, c is 0.01 to 10, and x is a number taken to satisfy the average valences of M.sup.1, M.sup.2, and M.sup.3 in the oxidation states in which they exist in the composition.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: May 19, 1981
    Assignee: Monsanto Company
    Inventors: Samuel J. Tremont, Alex N. Williamson, Arthur J. Solodar
  • Patent number: 4255604
    Abstract: Toluene dehydrocoupled products are produced by heating toluene in the vapor phase with an inorganic metal/oxygen composition which functions as an oxygen carrier and has the empirical formula:M.sub.a.sup.1 M.sub.b.sup.2 O.sub.xwhere M.sup.1 is lead and M.sup.2 is at least one element selected from silver, zinc, phosphorus, arsenic, thorium, the lanthanides or rare earths, Groups 1a, 3b, 4b, and 8 of the Periodic Table of the Elements, and mixtures thereof, and wherein a is 1, b is 0.01 to 10, and x is a number taken to satisfy the average valences of M.sup.1 and M.sup.32 in the oxidation states in which they exist in the composition. Alternatively, the same inorganic metal/oxygen composition can be employed as a catalyst or as a combination catalyst/oxygen carrier for the dehydrocoupling reaction when oxygen or an oxygen-contining gas is heated with the toluene.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: March 10, 1981
    Assignee: Monsanto Company
    Inventors: Alex N. Williamson, Samuel J. Tremont, Arthur J. Solodar
  • Patent number: 4192824
    Abstract: A method of producing a condensation product by reacting together an aromatic hydrocarbon with a carbonyl compound having more than one carbon atom (therefore excluding formaldehyde) in the presence of aluminium chloride or bromide, at a temperature of from 5.degree. to 90.degree. C. The aluminium chloride or bromide should be substantially anhydrous. The aromatic hydrocarbon should be mono- or bi-nuclear and may be alkylated. The carbonyl compound may be an aldehyde or a betone and may be albyl or aryl.
    Type: Grant
    Filed: January 9, 1979
    Date of Patent: March 11, 1980
    Assignee: Coal Industry (Patents) Limited
    Inventors: Joseph G. Robinson, David I. Barnes
  • Patent number: 4152362
    Abstract: A reaction mixture comprising an aromatic hydrocarbon and hydrogen is contacted under hydroalkylation conditions with a composition comprising at least one rhenium compound supported on a calcined, acidic, nickel and rare earth-treated crystalline zeolite.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: May 1, 1979
    Assignee: Phillips Petroleum Company
    Inventor: Timothy P. Murtha